Apparatus for treating milk



(N0 Model.)

B. LARKEY. APPARATUS FOR TREATING MILK.

No. 523,043. Patented July 17, 1894.

. I awuawboz a Z1113 6 6 for/+10% NITED STATES ATENT FFICE.

RASMUS LARKEY, OF PElVAUKEE, WVISOONSIN.

APPARATUS FOR TREATING MILK.

SPECIFICATION forming part of Letters Patent No. 523,043, dated July17,1894. Application filed February 21, 1894. Serial No. 500,992. (Nomodel.)

.To all whom, it may concern.-

is a cleaning or scraping disk D.

Be it known that I, RAsMUs LARKEY, a citizen of the United States,residing at Pewaukee, in the county of Waukesha and State of Wisconsin,have invented certain new and useful Improvements in Methods of andApparatus for Treating Milk; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in-the art to which it appertains to make and usethe same.

This invention relates to an improvement in apparatus for treating milk,and it consists in the construction and arrangement of the parts of anapparatus hereinafter described and definitely pointed out in theclaims.

The object of the invention is the provision of an improved apparatusfor heating milk prior to its introduction into churning or treatingdevices, adapted more especially for use in creameries. This object isattained by the construction of the apparatus illustrated in theaccompanying drawings wherein like letters of reference indicatecorresponding parts in the several views, and in which- Figure l is alongitudinal section of the ap paratus. Fig. 2 is a cross-section on aline taken through the steam nipple, shown in Fig. 1. Fig. 3 is anelevation of the feeding end with cap removed, and Fig. 4 is an endelevation of the discharge end.

In the accompanying drawings A represents a cylindrical receptaclehaving coupling threads at opposite ends. 13 the coupling or headhavinga marginal flange threaded to engage the threads on thereceptacle. Through the center of the head B passes the supply pipe Bwhich discharges into the receptacle. The head B has the hand holds orleversb on its periphery by which the same may be quickly removed oradjusted in place.

Located within the receptacle a short distance from the head B is aspider or star plug 0 having a central hub a through which passes athreaded bore, arranged to receive the threaded end of a cleaner rod D,which latter extends centrally through the receptacle to the far endtherof. On the end of the rod D The hub c is cylindrical and has the endof a perforated pipe E fitted closely therein forming a tight joint. Thepipe E extends longitudinally across the receptacle and incloses the rodD and its cleaning disk, and its opposite end is seated in a cylindricalseat formed in a cross head F located at the discharge end of thereceptacle. As shown in Figs. 1 and 2 the cross head consists of atubular central section f, the outer wall f closing the rear end of thetube and against which the tube E abuts. From the under side of sectionf extends a nipple F having a central passage which communicates withthe interior of the tube E through an aperture 6 formed therein. Thelower end of the nipple is fustoconical in shape and is normally seatedin a socket formed on the upper end of the steam coupling G which latterpasses through the wall of the casing the upper inner end of thecoupling being beveled to form the socket. To the outer end of thecoupling G the steam pipe is secured for the purpose of conducting steaminto the tube E.

To firmly seat the nipple'in the socket when the apparatus is Workin g Iemploy a cam H journaled in cars h formed on the top of the cross headF. This cam has a hand lever h thereon and is so arranged that as thelever is lowered the cam is brought into contact with the upper wall ofthe receptacle and the continued downward movement of the lever forcesthe nipple snugly into the socket of coupling G.

On the rear end of the receptacle is secured the reduction dischargespout J consisting of a headj formed with the marginal flange j havingthreads with which the threads on the receptacle engage. The dischargespout proper is located eccentrically on the head, its lower wall on aline with the lowermost portion of the receptacle while its top and sideWalls converge to the coupling or discharge end.

On the discharge spout is secured a vertical hollow casingK extendingabove the plane of the receptacle and communicating with the spoutthrough a suitable opening; the same being extended up to prevent themilk from flowing out of the top. In the upper end of the casing issecured a rubber diaphragm is having a small central opening k. V

The diaphragm is secured in place by a cap nut 70 having a centralaperture.

L is a thermometer having a knob on its ICO upper end and a cylindricalstem, which passes through the aperture and is closely held by a sealedjoint in the casing, its lower end or bulb occupying a position near thebase of the spout. By this means the thermometer can be quickly removedand replaced.

In constructing the apparatus the parts are preferably formed ofpolished metal and the joints are packed. I have, however, found thatpacking may be dispensed with.

The operation is as follows: The milk is introduced into the receptaclethrough the pipe B from the vat or tank; the receptacle allowed to filland the milk is then allowed to issue into the churning apparatus oragitator, and thereafter a constant flow carried on through thereceptacle. While the milk is passing through the receptacle I introducesteam under pressure into pipe E the same issuing through the apertureand mixing with the milk, heating and treating the same. When thetemperature is too high the steam supply is cut off thereby preventingwaste by over-heating as is often the case in other apparatus now used.When the supply of milk is cut off the receptacle is quickly 1(grainedthrough the spout owing to its posi- When it becomes necessary to cleanthe apparatus it is only necessary to remove the ends or heads, loosenthe cam from its contact with the casing, lift the nipple from its seatand withdraw the cross head pipe E, spider O and the same beingnnseated. The interior of the receptacle may then be cleaned. To cleanthe interior of the pipe E, the same is removed from the hub d and therod D is drawn back and forth, the disk on its end scraping up anydeposits in the pipe. It will thus be seen that the interior of theapparatus can be quickly removed and cleaned and it will be further seenthat by having the steam jets arranged throughout the pipe that auniform heating of the milk is obtained and further that the same isquickly heated while passing directly from the vat to the otherdepository, thus rapidly and effectually accomplishing the resultdesired.

I am aware that the apparatus can be modi- I fied wlthout departing fromthe nature and principle of my invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In an apparatus for heating milk, the

2. In an apparatus for heating milk, the combination with a receptaclehaving a removable head and supply and discharge openings, of aremovablesteam heating pipe within the receptacle, a removable support for thepipe located in the receptacle, a steam supply pipe, and means in thereceptacle for detachably connecting the supply and heating pipes,substantially as described.

3. In a milk heating apparatus, the combination with a milk containingreceptacle having a supply and discharge pipe at opposite ends, acentralperforated pipe, a movable sup port for the rear end of the pipe, asteam coupling for the pipe having a detached section, and means forremovably holding the sections of the couplings in place, substantiallyas described.

4. In a milk heating apparatus, the combination with a receptacle, ofremovable heads on the ends thereof, inlet and outlet openings for thereceptacle, a removable pipe located within the receptacle, a steamcoupling for the pipe leading to the outside of the receptacle, a nippleon the pipe loosely engaging the coupling and means for forcing thecoupling and nipple into close contact, substantially as described.

5. In a milk heating apparatus, the combination with a receptacle, of aperforated steam pipe therein, a removable support for one end of thesteam pipe,a cleanerin the pipe, a rod on the cleaner having one endsecured to the support a support for the opposite end of the steam pipeand a removable head for the receptacle, substantially as described.

6. In a milk heating apparatus the combination with a receptacle havingremovable ends and having inlet and outlet openings therein of a steampipe in the receptacle, a nipple on the pipe, a coupling passing throughthe receptacle and loosely engaging the nipple, and a cam engaging thereceptacle for forcing the nipple and couplinginto close contact,substantially as described.

7. In a steam milk heating apparatus the combination with a receptaclehaving inlet and outlet openings, of a perforated steam pipe in thereceptacle, a removable support for one end of the pipe, a removablesupport for the opposite end, a nipple for the pipe, a coupling in theside of the receptacle, a socketed loose connection between the couplingand nipple, and a cam on the support adjacent to. the nipple arranged toengage with the wall of the receptacle to form atight joint between thenipple and coupling, substantially as described.

In testimony whereofI-aflix my signature in presence of two witnesses.

RASMUS LARKEY.

Witnesses:

E. R. HAYVLEY, H ALX. CALDWELL.

